662020049 has 2 divisors, whose sum is σ = 662020050. Its totient is φ = 662020048.

The previous prime is 662019977. The next prime is 662020067. The reversal of 662020049 is 940020266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436810000 + 225210049 = 20900^2 + 15007^2 .

It is a cyclic number.

It is not a de Polignac number, because 662020049 - 2²⁴ = 645242833 is a prime.

It is not a weakly prime, because it can be changed into another prime (662020349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331010024 + 331010025.

It is an arithmetic number, because the mean of its divisors is an integer number (331010025).

Almost surely, 2^662020049 is an apocalyptic number.

It is an amenable number.

662020049 is a deficient number, since it is larger than the sum of its proper divisors (1).

662020049 is an equidigital number, since it uses as much as digits as its factorization.

662020049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 662020049 is about 25729.7502708441. The cubic root of 662020049 is about 871.5461338007.

The spelling of 662020049 in words is "six hundred sixty-two million, twenty thousand, forty-nine".